From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-3.0 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 02A79C282C4 for ; Mon, 4 Feb 2019 11:10:03 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id CFCFA207E0 for ; Mon, 4 Feb 2019 11:10:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1730783AbfBDLKB (ORCPT ); Mon, 4 Feb 2019 06:10:01 -0500 Received: from usa-sjc-mx-foss1.foss.arm.com ([217.140.101.70]:53944 "EHLO foss.arm.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729301AbfBDLJ7 (ORCPT ); Mon, 4 Feb 2019 06:09:59 -0500 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 1B71FA78; Mon, 4 Feb 2019 03:09:59 -0800 (PST) Received: from queper01-lin.cambridge.arm.com (queper01-lin.cambridge.arm.com [10.1.195.48]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 29B223F675; Mon, 4 Feb 2019 03:09:57 -0800 (PST) From: Quentin Perret To: viresh.kumar@linaro.org, sudeep.holla@arm.com, rjw@rjwysocki.net, nm@ti.com, sboyd@kernel.org, mka@chromium.org Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, dietmar.eggemann@arm.com, quentin.perret@arm.com Subject: [PATCH v4 0/5] Register an Energy Model for Arm reference platforms Date: Mon, 4 Feb 2019 11:09:47 +0000 Message-Id: <20190204110952.16025-1-quentin.perret@arm.com> X-Mailer: git-send-email 2.20.1 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The Energy Model (EM) framework feeds interested subsystems (the scheduler/EAS as of now) with power costs provided by drivers. Yet, no driver is actually doing that upstream yet. This series updates a set of CPUFreq drivers in order to register power costs in the EM framework for some of the Arm reference platforms for EAS: Hikey960, Juno and TC2. The series is split as follows: - Patch 01 introduces in PM_OPP a helper function which estimates the CPU power using the P=CV²f equation also used by IPA. It should be noted that this introduces duplicate code with IPA, which will eventually be fixed by migrating IPA to using PM_EM. The ideal plan would be to do so later, in a separate patch series. I would indeed prefer to keep the thermal and CPUFreq discussion separate at this stage, if deemed acceptable. - Patches 02-04 make use of that PM_OPP helper function from the following CPUFreq drivers: cpufreq-dt, scpi-cpufreq and arm_big_little. - Patch 05 modifies the SCMI cpufreq driver to pass the power costs obtained from firmware to PM_EM. This patch is independent from the rest of the series. Changes since v3 (20190201093101.31869-1-quentin.perret@arm.com) - Moved the OPP count inside dev_pm_opp_of_register_em() (Matthias, Sudeep) Changes since v2 (20190130170506.20450-1-quentin.perret@arm.com) - Added comment to explain why we check only the dynamic-power-coeff property and not voltages in dev_pm_opp_of_register_em() (Viresh) - Fixed comments/docstrings of new functions in opp/of.c (Matthias) - Added Matthias' Tested-by to patch 01 Changes since v1 (20190128165522.31749-1-quentin.perret@arm.com): - Dropped the DT patches that have been queued by Sudeep - Introduced dev_pm_opp_of_register_em() helper to check the presence of the DT coeff before calling PM_EM (Viresh, Matthias) - Coding-style improvements (Viresh, Matthias) Thanks, Quentin Dietmar Eggemann (1): cpufreq: arm_big_little: Register an Energy Model Quentin Perret (4): PM / OPP: Introduce a power estimation helper cpufreq: dt: Register an Energy Model cpufreq: scpi: Register an Energy Model cpufreq: scmi: Register an Energy Model drivers/cpufreq/arm_big_little.c | 2 + drivers/cpufreq/cpufreq-dt.c | 2 + drivers/cpufreq/scmi-cpufreq.c | 39 ++++++++++++- drivers/cpufreq/scpi-cpufreq.c | 3 + drivers/opp/of.c | 99 ++++++++++++++++++++++++++++++++ include/linux/pm_opp.h | 6 ++ 6 files changed, 148 insertions(+), 3 deletions(-) -- 2.20.1